Quantum valence criticality in a correlated metal

Kuga, K; Matsumoto, Y; Okawa, M; Suzuki, S; Tomita, T; Sone, K; Shimura, Y; Sakakibara, T; Nishio-Hamane, D; Karaki, Y; Takata, Y; Matsunami, M; Eguchi, R; Taguchi, M; Chainani, A; Shin, S; Tamasaku, K; Nishino, Y; Yabashi, M; Ishikawa, T; Nakatsuji, S

SCIENCE ADVANCES   4 ( 2 )   eaao3547 - 6   2018年02月

Strange metal without magnetic criticality

Tomita, T; Kuga, K; Uwatoko, Y; Coleman, P; Nakatsuji, S

SCIENCE   349 ( 6247 )   506 - 509   2015年07月

Magnetic order induced by Fe substitution of Al site in the heavy-fermion systems α-YbAlB<inf>4</inf> and β-YbAlB<inf>4</inf>

Kentaro Kuga, Gregory Morrison, Larico Treadwell, Julia Y. Chan, Satoru Nakatsuji

Physical Review B - Condensed Matter and Materials Physics   86 ( 22 )   224413-1 - 6   2012年12月

Spin-Orbital Short-Range Order on a Honeycomb-Based Lattice

Nakatsuji, S; Kuga, K; Kimura, K; Satake, R; Katayama, N; Nishibori, E; Sawa, H; Ishii, R; Hagiwara, M; Bridges, F; Ito, TU; Higemoto, W; Karaki, Y; Halim, M; Nugroho, AA; Rodriguez-Rivera, JA; Green, MA; Broholm, C

SCIENCE   336 ( 6081 )   559 - 563   2012年05月

Quantum Criticality Without Tuning in the Mixed Valence Compound β-YbAlB₄

Matsumoto, Y; Nakatsuji, S; Kuga, K; Karaki, Y; Horie, N; Shimura, Y; Sakakibara, T; Nevidomskyy, AH; Coleman, P

SCIENCE   331 ( 6015 )   316 - 319   2011年01月

Superconducting properties of the non-fermi-liquid system β-YbAlB₄

Kuga, K; Karaki, Y; Matsumoto, Y; Machida, Y; Nakatsuji, S

PHYSICAL REVIEW LETTERS   101 ( 13 )   137004-1 - 4   2008年09月

Superconductivity and quantum criticality in the heavy-fermion system β-YbAlB₄

Nakatsuji, S; Kuga, K; Machida, Y; Tayama, T; Sakakibara, T; Karaki, Y; Ishimoto, H; Yonezawa, S; Maeno, Y; Pearson, E; Lonzarich, GG; Balicas, L; Lee, H; Fisk, Z

NATURE PHYSICS   4 ( 8 )   603 - 607   2008年08月

Evidence for energy-dependent scattering dominating thermoelectricity in heavy fermion systems

Daiki Goto, Kentaro Kuga, Kiyohisa Tanaka, Tsunehiro Takeuchi, Masaharu Matsunami

Applied Physics Letters   127 ( 16 )   161903 - 161903   2025年10月

Coupling of magnetism and transport properties to the lattice degrees of freedom in NdBaCo₂O_5+δ (δ ~ 0.65)

Himanshu Pant, Saurabh Singh, Jaskirat Brar, Priyamedha Sharma, M Bharath, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu

Journal of Physics: Condensed Matter   37 ( 13 )   135603 - 135603   2025年02月

Orbital hybridisation effects in B2 phase Cr doped Co2MnAl.

Swati Pathak, Saurabh Singh, S Khalid, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu

Journal of Physics: Condensed Matter   35 ( 39 )   2023年10月

Lattice effects on the physical properties of half-doped perovskite ruthenates

Jaskirat Brar, Saurabh Singh, Kentaro Kuga, Priyamedha Sharma, M. Bharath, Tsunehiro Takeuchi, R. Bindu

Journal of Physics: Condensed Matter   35 ( 19 )   2023年05月

Valence fluctuation in Yb₃Si₅ probed by synchrotron X-ray photoemission spectroscopy

Kentaro Kuga, Masaharu Matsunami, Hidenori Fujiwara, Goro Nozue, Akane Ose, Akira Sekiyama, Akira Yasui, Satoru Hamamoto, Masaki Oura, Tsunehiro Takeuchi

Japanese Journal of Applied Physics   62 ( SD )   SD1014 - SD1014   2023年05月

Thermoelectric performance of Fe₂V_0.9W_0.1Al thin films deposited on n-type Si substrates

Machda, F., Singh, S., Kuga, K., Ang, A.K.R., Matsunami, M., Takeuchi, T.

Japanese Journal of Applied Physics   62 ( 5 )   2023年05月

Magneto-thermal conductivity effect and enhanced thermoelectric figure of merit in Ag₂Te

Keisuke Hirata, Kentaro Kuga, Masaharu Matsunami, Minyue Zhu, Joseph P. Heremans, Tsunehiro Takeuchi

AIP Advances   13 ( 1 )   2023年01月

Multicritical phase diagram of PrMn_1-xSb₂ with two interacting magnetic elements

Takahiro Urata, Yusuke Takahashi, Kentaro Kuga, Tsunehiro Takeuchi, Hiroshi Ikuta

Physical Review B   106 ( 18 )   2022年11月

Synthesis and structural link to the electronic and magneto-transport properties of spin-orbit Mott insulator Sr2IrO4.

Priyamedha Sharma, Saurabh Singh, Kentaro Kuga, Tsunehiro Takeuchi, R Bindu

Journal of Physics: Condensed Matter   34 ( 43 )   2022年10月

Electronic structure of silver chalcogenides investigated by hard x-ray photoemission spectroscopy and density functional theory calculations

K. Sato, K. Hirata, S. Singh, K. Kuga, F. Ogawa, M. Matsunami, T. Takeuchi

Journal of Applied Physics   132 ( 4 )   2022年07月

Pressure-induced changes of valence fluctuation in beta-YbAlB4 probed by x-ray

Yui Sakaguchi, Shugo Ikeda, Naomi Kawamura, Masaichiro Mizumaki, Kentaro Kuga, Shintaro Suzuki, Keita Sone, Satoru Nakatsuji, Hisao Kobayashi

PHYSICAL REVIEW B   105 ( 15 )   2022年04月

Synergetic Enhancement of the Power Factor and Suppression of Lattice Thermal Conductivity via Electronic Structure Modification and Nanostructuring on a Ni- and B-Codoped <i>p</i>-Type Si-Ge Alloy for Thermoelectric Application

Muthusamy, O; Singh, S; Hirata, K; Kuga, K; Harish, SK; Shimomura, M; Adachi, M; Yamamoto, Y; Matsunami, M; Takeuchi, T

ACS APPLIED ELECTRONIC MATERIALS   3 ( 12 )   5621 - 5631   2021年12月

High-temperature antiferromagnetism in Yb based heavy fermion systems proximate to a Kondo insulator

Suzuki, S; Takubo, K; Kuga, K; Higemoto, W; Ito, TU; Tomita, T; Shimura, Y; Matsumoto, Y; Bareille, C; Wadati, H; Shin, S; Nakatsuji, S

PHYSICAL REVIEW RESEARCH   3 ( 2 )   2021年05月

Strong in-plane anisotropy in the electronic structure of fixed-valence β-LuAlB₄

Reiss, P; Baglo, J; Tan, HE; Chen, XY; Friedemann, S; Kuga, K; Grosche, FM; Nakatsuji, S; Sutherland, M

PHYSICAL REVIEW B   102 ( 8 )   2020年08月

Ground State Local 4f Symmetry of CeAgSb2 Probed by Linearly Polarized Hard X-ray Photoemission

H. Fujiwara, Y. Kondo, S. Hamamoto, Y. Kanai-Nakata, K. Kuga, A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, T. Kiss, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, T. Ebihara, A. Sekiyama

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   2020年03月

Observation of Electronic Structures in Sr-Based Iridates by Bulk-Sensitive Photoemission Spectroscopy

Koya Nakagawa, Hidenori Fujiwara, Satoru Hamamoto, Sho Miyazaki, Yasuhiro Nakatani, Kentaro Kuga, Atsushi Higashiya, Toshiharu Kadono, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Takayuki Muro, Shin Imada, Akira Sekiyama, Kouichi Takase, Hiromi Kobori, Atsushi Yamasaki

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   30   011146-1 - 6   2020年03月

Local 4f Electronic Structure in PrAg2In Studied by Polarized X-Ray Absorption and Photoemission Spectroscopy

Satoru Hamamoto, Shuhei Fujioka, Yuina Kanai-Nakata, Kohei Yamagami, Kentaro Kuga, Hidenori Fujiwara, Takayuki Kiss, Hiroyuki S. Suzuki, Atsushi Higashiya, Atsushi Yamasaki, Shin Imada, Arata Tanaka, Yukiharu Takeda, Yuji Saitoh, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Akira Sekiyama

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)   30   011113-1 - 5   2020年03月

Linearly Polarized Hard X-Ray Photoemission Spectroscopy of PrBe13

Satoru Hamamoto, Yuina Kanai-Nakata, Hidenori Fujiwara, Kentaro Kuga, Takayuki Kiss, Atsushi Higashiya, Atsushi Yamasaki, Shin Imada, Arata Tanaka, Kenji Tamasaku, Makina Yabashi, Tetsuya Ishikawa, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka, Akira Sekiyama

Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena   29   012010-1 - 6   2020年02月

Linear polarization-dependent core-level photoemission spectroscopy in Yb-based valence fluctuating system

Kuga, K; Kanai, Y; Fujiwara, H; Yamagami, K; Hamamoto, S; Aoyama, Y; Sekiyama, A; Higashiya, A; Kadono, T; Imada, S; Yamasaki, A; Tamasaku, K; Yabashi, M; Ishikawa, T; Nakatsuji, S; Kiss, T

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   238   146889-1 - 4   2020年01月

Observation of the 4<i>f</i> ground-state symmetry in strongly correlated cubic Pr compounds probed by linearly polarized 3<i>d</i> core-level photoemission spectroscopy

Hamamoto, S; Kanai, Y; Fujioka, S; Nakatani, Y; Fujiwara, H; Kuga, K; Kiss, T; Higashiya, A; Yamasaki, A; Imada, S; Tanaka, A; Tamasaku, K; Yabashi, M; Ishikawa, T; Hidaka, H; Yanagisawa, T; Amitsuka, H; Matsumoto, KT; Onimaru, T; Takabatake, T; Sekiyama, A

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   238   146885-1 - 4   2020年01月

CePd₃と関連物質における熱電特性と電子構造の研究

尾川 史武, 久我 健太郎, 平田 圭介, 松波 雅治, 竹内 恒博

日本物理学会講演概要集   75.1 ( 0 )   1904 - 1904   2020年

Revising the 4<i>f</i> symmetry in CeCu₂Ge₂: Soft x-ray absorption and hard x-ray photoemission spectroscopy

Aratani, H; Nakatani, Y; Fujiwara, H; Kawada, M; Kanai, Y; Yamagami, K; Fujioka, S; Hamamoto, S; Kuga, K; Kiss, T; Yamasaki, A; Higashiya, A; Kadono, T; Imada, S; Tanaka, A; Tamasaku, K; Yabashi, M; Ishikawa, T; Yasui, A; Saitoh, Y; Narumi, Y; Kindo, K; Ebihara, T; Sekiyamab, A

PHYSICAL REVIEW B   98 ( 12 )   121113\_1 - 121113\_6   2018年09月

Valence fluctuating compound α-YbAlB₄ studied by <SUP>174</SUP>Yb Mossbauer spectroscopy and X-ray diffraction using synchrotron radiation

Oura, M; Ikeda, S; Masuda, R; Kobayashi, Y; Seto, M; Yoda, Y; Hirao, N; Kawaguchi, SI; Ohishi, Y; Suzuki, S; Kuga, K; Nakatsuji, S; Kobayashi, H

PHYSICA B-CONDENSED MATTER   536 ( 1 )   162 - 164   2018年05月

Hole doping effect on the electronic structure of layered oxypnictide LaOMnAs

Higashiya, A; Nakagawa, K; Yamasaki, A; Nagai, K; Fujioka, S; Kanai, Y; Yamagami, K; Fujiwara, H; Sekiyama, A; Abozeed, A; Kadono, T; Imada, S; Kuga, K; Yabashi, M; Tamasaku, K; Ishikawa, T; Toyama, S; Takase, K

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   220   58 - 60   2017年10月

Frustrated magnetism in the Heisenberg pyrochlore antiferromagnets <i>A</i>Yb₂<i>X</i>₄ (<i>A</i> = Cd, Mg; <i>X</i> = S, Se)

Higo, T; Iritani, K; Halim, M; Higemoto, W; Ito, TU; Kuga, K; Kimura, K; Nakatsuji, S

PHYSICAL REVIEW B   95 ( 17 )   174443-1 - 7   2017年05月

Anisotropic Thermal Expansion of α-YbAlB<inf>4</inf>

Yosuke Matsumoto, K. Kuga, T. Tomita, R. Küchler, S. Nakatsuji

Journal of Physics: Conference Series   807 ( 2 )   2017年04月

Lifetime-Broadening-Suppressed X-ray Absorption Spectrum of β-YbAlB₄ Deduced from Yb 3<i>d</i> → 2<i>p</i> Resonant X-ray Emission Spectroscopy

Kawamura, N; Kanai, N; Hayashi, H; Matsuda, YH; Mizumaki, M; Kuga, K; Nakatsuji, S; Watanabe, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   86 ( 1 )   014711-1 - 7   2017年01月

Pressure-induced magnetic transition exceeding 30 K in the Yb-based heavy-fermion β-YbAlB₄

Tomita, T; Kuga, K; Uwatoko, Y; Nakatsuji, S

PHYSICAL REVIEW B   94 ( 24 )   245130-1 - 6   2016年12月

Quantum criticality and inhomogeneous magnetic order in Fe-doped α-YbAlB₄

MacLaughlin, DE; Kuga, K; Shu, L; Bernal, OO; Ho, PC; Nakatsuji, S; Huang, K; Ding, ZF; Tan, C; Zhang, J

PHYSICAL REVIEW B   93 ( 21 )   214421-1 - 8   2016年06月

Pressure-Induced Local Structural Changes in Heavy Fermion β-YbAlB₄

Sakaguchi, Y; Ikeda, S; Kuga, K; Suzuki, S; Nakatsuji, S; Hirao, N; Ohishi, Y; Kobayashi, H

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   85 ( 2 )   023602-1 - 4   2016年03月

High Magnetic Transition Temperature and Semiconductor like Transport Properties of Mn-doped α-YbAlB<inf>4</inf>

S. Suzuki, T. Tomita, Y. Shimura, K. Kuga, Y. Matsumoto, S. Nakatsuji

Journal of Physics: Conference Series   683 ( 1 )   2016年02月

Site-selective ¹¹B NMR studies on YbAlB<inf>4</inf>

S. Takano, M. S. Grbic, K. Kimura, M. Yoshida, M. Takigawa, E. C.T.O. Farrell, K. Kuga, S. Nakatsuji, H. Harima

Journal of Physics: Conference Series   683 ( 1 )   2016年02月

Quantum Criticality Beneath the Superconducting Dome in β-YbAlB<inf>4</inf>

T. Tomita, K. Kuga, Y. Uwatoko, S. Nakatsuji

Journal of Physics: Conference Series   683 ( 1 )   2016年02月

X-ray Absorption Spectroscopy in the Heavy Fermion Compound α-YbAlB₄ at High Magnetic Fields

Terashima, TT; Matsuda, YH; Kuga, K; Suzuki, S; Matsumoto, Y; Nakatsuji, S; Kondo, A; Kindo, K; Kawamura, N; Mizumaki, M; Inami, T

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   84 ( 11 )   114715-1 - 4   2015年11月

Magnetic Order in the Frustrated Ising Quasi-One Dimensional Compound NaCo(acac)₃•Benzene

Karaki, Y; Kuga, K; Kimura, K; Nakatsuji, S; Matsubayashi, K; Uwatoko, Y

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   84 ( 8 )   084708-1 - 5   2015年08月

Intact quasiparticles at an unconventional quantum critical point

Sutherland, ML; O'Farrell, ECT; Toews, WH; Dunn, J; Kuga, K; Nakatsuji, S; Machida, Y; Izawa, K; Hill, RW

PHYSICAL REVIEW B   92 ( 4 )   2015年07月

Conduction electron spin resonance in the α-Yb_1-<i>x</i>Fe<i>_x</i>AlB₄ (0 ≤ <i>x</i> ≤ 0.50) and α-LuAlB₄ compounds

Holanda, LM; Lesseux, GG; Magnavita, ET; Ribeiro, RA; Nakatsuji, S; Kuga, K; Fisk, Z; Oseroff, SB; Urbano, RR; Rettori, C; Pagliuso, PG

JOURNAL OF PHYSICS-CONDENSED MATTER   27 ( 25 )   2015年07月

Field Evolution of Quantum Critical and Heavy Fermi-Liquid Components in the Magnetization of the Mixed Valence Compound β-YbAlB₄

Matsumoto, Y; Kuga, K; Karaki, Y; Shimura, Y; Sakakibara, T; Tokunaga, M; Kindo, K; Nakatsuji, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   84 ( 2 )   024710-1 - 7   2015年02月

Unconventional Quantum Criticality in β-YbAlB<inf>4</inf> Detached from Its Magnetically Ordered Phase

Takahiro Tomita, Kentaro Kuga, Yoshiya Uwatoko, Piers Coleman, Satoru Nakatsuji

Physics Procedia   75   482 - 487   2015年

Magnetization of Yb-Based Mixed-Valent Compounds at Megagauss Fields

T. Terashima, Y. H. Matsuda, K. Kuga, Y. Matsumoto, S. Nakatsuji, K. Yoshimura, T. Nakahigashi

JPS Conference Proceedings   3   011027-1 - 5   2014年06月

Two Magnetic Phases in alpha-YbAl1−xFexB4

Kentaro Kuga, Shintaro Suzuki, Satoru Nakatsuji

JPS Conference Proceedings   3   012013-1 - 4   2014年06月

Suppression of the Heavy Fermion State in Magnetic Fields in the Mixed Valent alpha-YbAIB4

Yosuke Matsumoto, Kuga Kentaro, Satoru Nakatsuji

JPS Conference Proceedings   3   011076-1 - 5   2014年06月

Superconducting Properties of the Ferroquadrupolar Cubic Gamma3 Compound PrTi2Al20

Akito Sakai, Kentaro Kuga, Satoru Nakatsuji

JPS Conference Proceedings   3   011066-1 - 6   2014年06月

Structural and Magnetic Properties of alpha-Yb(Al1−xFex)B4 under Hydrostatic Pressure

Yui Sakaguchi, Shugo Ikeda, Kentaro Kuga, Satoru Nakatsuji, Naohisa Hirao, Yasuo Ohishi, Hisao Kobayashi

JPS Conference Proceedings   3   011059-1 - 6   2014年06月

Anisotropic transverse magnetoresistivity in α-YbAlB<inf>4</inf>

Yosuke Matsumoto, Jinpyo Hong, Kentaro Kuga, Satoru Nakatsuji

Journal of Physics: Conference Series   592 ( 1 )   012086-1 - 6   2014年

Synchrotron X-ray spectroscopy study on the valence state and magnetization in α-YbAl<inf>1-x</inf>Fe<inf>x</inf>B<inf>4</inf> (x =0.115) at low temperatures and high magnetic fields

T. Terashima, Y. H. Matsuda, K. Kuga, S. Suzuki, Y. Matsumoto, S. Nakatsuji, A. Kondo, K. Kindo, N. Kawamura, M. Mizumaki, T. Inami

Journal of Physics: Conference Series   592 ( 1 )   012020-1 - 6   2014年

High pressure measurements of the resistivity of β-YbAlB<inf>4</inf>

T. Tomita, K. Kuga, Y. Uwatoko, S. Nakatsuji

Journal of Physics: Conference Series   592 ( 1 )   012019-1 - 5   2014年

Chemical effects of high-resolution Yb<i>L</i>γ₄ emission spectra: a possible probe for chemical analysis

Hayashi, H; Kanai, N; Kawamura, N; Matsuda, YH; Kuga, K; Nakatsuji, S; Yamashita, T; Ohara, S

X-RAY SPECTROMETRY   42 ( 6 )   450 - 455   2013年11月

Magnetic order induced by Fe doping in the intermediate valence system <i>β</i>-YbAlB₄

Kuga, K; Nakatsuji, S

JOURNAL OF THE KOREAN PHYSICAL SOCIETY   63 ( 3 )   549 - 550   2013年08月

Mossbauer spectroscopy of Fe-doped valence-fluctuating <i>α</i>-YbAlB₄

Sakaguchi, Y; Ikeda, S; Kobayashi, H; Kuga, K; Sone, K; Nakatsuji, S

JOURNAL OF THE KOREAN PHYSICAL SOCIETY   62 ( 12 )   2146 - 2149   2013年07月

Synchrotron X-ray spectroscopy study on the valence state in <i>α</i>- and <i>β</i>-YbAlB₄ at low temperatures and high magnetic fields

Matsuda, YH; Nakamura, T; Kuga, K; Nakatsuji, S; Michimura, S; Inami, T; Kawamura, N; Mizumaki, M

JOURNAL OF THE KOREAN PHYSICAL SOCIETY   62 ( 12 )   1778 - 1781   2013年07月

Conduction electron spin resonance in AlB₂

Holanda, LM; Mendonça-Ferreira, L; Ribeiro, RA; Osorio-Guillén, JM; Dalpian, GM; Kuga, K; Nakatsuji, S; Fisk, Z; Urbano, RR; Pagliuso, PG; Rettori, C

JOURNAL OF PHYSICS-CONDENSED MATTER   25 ( 21 )   216001 - 216001   2013年05月

Magnetic order induced by Fe substitution of Al site in the heavy-fermion systems α-YbAlB₄ and β-YbAlB₄

Kuga, K; Morrison, G; Treadwell, L; Chan, JY; Nakatsuji, S

PHYSICAL REVIEW B   86 ( 22 )   2012年12月

Thermoelectric Response Near a Quantum Critical Point of β-YbAlB₄ and YbRh₂Si₂: A Comparative Study

Machida, Y; Tomokuni, K; Ogura, C; Izawa, K; Kuga, K; Nakatsuji, S; Lapertot, G; Knebel, G; Brison, JP; Flouquet, J

PHYSICAL REVIEW LETTERS   109 ( 15 )   156405-1 - 5   2012年10月

Superconductivity in the Ferroquadrupolar State in the Quadrupolar Kondo Lattice PrTi₂Al₂₀

Sakai, A; Kuga, K; Nakatsuji, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   81 ( 8 )   083702-1 - 4   2012年08月

T/B scaling of magnetization in the mixed valent compound β-YbAlB <inf>4</inf>

Yosuke Matsumoto, S. Nakatsuji, K. Kuga, Y. Karaki, Y. Shimura, T. Sakakibara, A. H. Nevidomskyy, P. Coleman

Journal of Physics: Conference Series   391 ( 1 )   012041-1 - 4   2012年

Anisotropic heavy-Fermi-liquid formation in valence-fluctuating α-YbAlB₄

Matsumoto, Y; Kuga, K; Tomita, T; Karaki, Y; Nakatsuji, S

PHYSICAL REVIEW B   84 ( 12 )   125126-1 - 7   2011年09月

Quantum Critical Kondo Quasiparticles Probed by ESR in β-YbAlB₄

Holanda, LM; Vargas, JM; Iwamoto, W; Rettori, C; Nakatsuji, S; Kuga, K; Fisk, Z; Oseroff, SB; Pagliuso, PG

PHYSICAL REVIEW LETTERS   107 ( 2 )   026402-1 - 4   2011年07月

Anisotropic Electrical Transport in the Heavy Fermion Compound α-YbAlB₄

Kuga, K; Matsumoto, Y; Horie, N; Nakatsuji, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( SUPPL. A )   SA089-1 - 2   2011年07月

Thermoelectric coefficients of the quantum critical β-YbAlB₄

Machida, Y; Ogura, C; Izawa, K; Kuga, K; Nakatsuji, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( SUPPL. A )   SA088-1 - 3   2011年07月

NMR/NQR and specific heat studies of iron pnictide superconductor KFe₂As₂

Fukazawa, H; Saito, T; Yamada, Y; Kondo, K; Hirano, M; Kohori, Y; Kuga, K; Sakai, A; Matsumoto, Y; Nakatsuji, S; Kihou, K; Iyo, A; Lee, CH; Eisaki, H

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( Suppl.A )   SA118 - SA118   2011年07月

Low Temperature Magnetic Properties of Pr(Cu,Ga)₁₃ with Orbitally Degenerate Ground State

Shimura, Y; Sakakibara, T; Kuga, K; Cho, JY; Chan, JY

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( SUPPL. A )   SA072-1 - 3   2011年07月

Kondo Lattice Behavior in the Valence Fluctuating Systems α- and β-YbAlB₄

Matsumoto, Y; Kuga, K; Horie, N; Nakatsuji, S

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( SUPPL. A )   SA090-1 - 3   2011年07月

Local moment behaviors of the valence fluctuating systems β-YbAlB <inf>4</inf> and α-YbAlB<inf>4</inf>

Y. Matsumoto, K. Kuga, N. Horie, S. Nakatsuji

Journal of Physics: Conference Series   273 ( 1 )   012006-1 - 4   2011年

Low-temperature magnetic properties of Pr(Cu,Ga)<inf>12.85</inf>

Y. Shimura, T. Sakakibara, K. Kuga, J. Y. Cho, J. Y. Chan

Journal of Physics: Conference Series   273 ( 1 )   012054-1 - 4   2011年

Strong Valence Fluctuation in the Quantum Critical Heavy Fermion Superconductor β-YbAlB₄: A Hard X-Ray Photoemission Study

Okawa, M; Matsunami, M; Ishizaka, K; Eguchi, R; Taguchi, M; Chainani, A; Takata, Y; Yabashi, M; Tamasaku, K; Nishino, Y; Ishikawa, T; Kuga, K; Horie, N; Nakatsuji, S; Shin, S

PHYSICAL REVIEW LETTERS   104 ( 24 )   247201-1 - 4   2010年06月

Low-temperature magnetization of the quantum critical heavy fermion superconductor β-YbAlB₄

Matsumoto, Y; Kuga, K; Karaki, Y; Tomita, T; Nakatsuji, S

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   247 ( 3 )   720 - 722   2010年03月

Pronounced non-Fermi-liquid behavior of the quantum critical heavy fermion superconductor β-YbAlB₄

Nakatsuji, S; Kuga, K; Tomita, T; Matsumoto, Y

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   247 ( 3 )   485 - 489   2010年03月

Crystal growth, structure, and physical properties of Ln(Cu, Al)₁₂ (Ln = Y, Ce, Pr, Sm, and Yb) and Ln(Cu, Ga)₁₂ (Ln = Y, Gd-Er, and Yb)

Drake, BL; Capan, C; Cho, JY; Nambu, Y; Kuga, K; Xiong, YM; Karki, AB; Nakatsuji, S; Adams, PW; Young, DP; Chan, JY

JOURNAL OF PHYSICS-CONDENSED MATTER   22 ( 6 )   2010年02月

Possible Multiple Gap Superconductivity with Line Nodes in Heavily Hole-Doped Superconductor KFe₂AS₂ Studied by <SUP>75</SUP>As Nuclear Quadrupole Resonance and Specific Heat

Fukazawa, H; Yamada, Y; Kondo, K; Saito, T; Kohori, Y; Kuga, K; Matsumoto, Y; Nakatsuji, S; Kito, H; Shirage, PM; Kihou, K; Takeshita, N; Lee, CH; Iyo, A; Eisaki, H

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   78 ( 8 )   083712-1 - 4   2009年08月

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